Nut-lock.



G. B. MARTIN.

NUT LOCK.

APPLICATION FILED MAR.12.1909.

939,048. Patented Nov. 2, 1909,

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UNITED sTATEs rn-TENT OFFICE.

GEORGE B. MARTIN, 0F MARIETTA, OHIO- NUT-LOCK.

To alt whom it may concern:

Be it known that I, GEoRGE'B. MARTIN, a

citizen of the United States of America, re'

siding at Marietta, in the county of Washington and State of Ohio, havein'vented certain new and useful Improvements in Nut- Locks, of whichthe following is a specification, reference being had therein to theaccompanying drawing.

rlhis invention relates to nut locks, and the objects of my inventionare, rst, to provide a novel washer that can be mounted upon a bolt andbent Vto prevent a nut screwed upon the bolt from rotating; second, toprovide a nut lock that can'be advantageously used in connection withrail joints or structures subjected to vibrations; and third, to providea simple and durable locking washer that willl -not injure a bolt or nutin connection with which it is used and will permit of the nut beingremoved from the bolt at any time.

- The above objects are attained by a nut locking device that will bepresently described and then claimed.

In the drawings z-Figure 1 is a side elevation of my nut lock as appliedto a'rail joint, Fig. 2 is a front elevation of the locking washer, Fig.3l is ,an edge View ofthe same, and Fig. 4 isa vertical sectional Viewof a portion of the locking washer with the parts thereof separated.

Referring tol the drawings in detail, 1 designates a substantiallyrectangular washer formed of malleable metal, the opening thereof beingindicated by the reference character 2. Each end of the ywasher isprovided with` a V-shaped notch to form two pairsl of bendable wings,the wings of one pair being indicated by the reference character 3 andthe wings of the other pair by the reference character 4. By providingthe V-shaped notches 5, eachof 4the wings can be independently bent andfurthermoresaid notches provide a clearance for the corners of the nut14 when bending the wing's to engage the sides ofthe nut, the clearancebeing necessary owing to the fact that the nut 14 is hexagonal.

In connection with the malleable washer 1, I use an annulus or ring 6which is made of a material similar to the washer 1. Thisy ring orannulus 6 is punched upon one side to provide four equa ly spaced lugs 7upon the opposite' side, and then, the ring and lugs are case-hardened.

Tosecure the washer 1 to the ring 6, said Specification of LettersPatent.

Patented Nov. 2, 1909.

Application filed March 12, 1909. Serial No. 482,893.

washer adjacent to the opening 2 and at four equally spaced pointscorresponding to the lugs 7 is punched upon one side, as-at 8, toprovide protuberances 9 vupon the opposite side, these protuberancesfitting in the punched recesses 1() of the ringor annulus 6.

Afterthe Washer and ring are assembled with the protuberances 9extending into the.

recesses 10, the washer and ring are electrically welded at theprotuberances 9, whereby the ring 6 will practically form an integralpart of the washer 1.

It is necessary that I make the .washer 1 separate in order that thering can be case-hardened.

the ring 6 and.

In Fig. 1 of the drawings, -I have illus- A trated a rail joint whereinthe'rail 11 is braced by splice bars 12, these splice bars being held inengagement with the vrail 11 bolt. Prior to screwing the nut 4 upon thebolt, the locking washer is slipped upon the bolt 13 with thecase-hardened lugs 7 confronting the, splice bar 12. As the nut 14is-screwed upon the bolt and impinges the washer 1,` the case-hardenedlugs 7 are forced into the splice bar 12, these lugs prevventing thelocking washer from rotating relative to the splice bar 12. Themalleable wings 4 are then bent downwardly upon the sides of the nut 14,thus preventing the -nut from rotating upon the bolt 13. Since theprongs 4 are made of a malleable material, the wings can be bentupwardlyl by use of a suitable instrument (not shown) when it is desiredto remove the nut from the bolt 13. Besides being applicable torailjoints,` my nut lock can be used in connection with rolling stock,-bridges and structural steel works subjected to vibrations.

Vhile in the drawings forming a part of this application, there isillustrated the preferred embodiments of my invention, it is obviousthat the elements therein vcan be varied or changed without departingfrom the spirit of the invention. Having now described I claim as new,is

A nut lock comprising a malleable washer substantially 'rectangular' incontour and having each end provided 'with a cut-away portion to form awasher with pairs of.

my invention what 'said Washer provided with protuberanc'es,A

75 by a bolt 13 and a nut 14 screwed upon said f and an annulus havinone side formed with recesses and its other slde provided `withcasehardened lugs, sald protuberances adapted to extend in said recessesand. electrically In testimony whereof I aiix my signeture 1n thepresence of two Witnesses.

GEORGE B. MARTIN.

Witnesses:

WM. M. SPRAGUE, C. W. SHRODES.

